High availability
Figure 26This section describes VRRP enhancements that are implemented in switch software:
Tracking VRRP router priority
The HP 10GbE switch software supports a tracking function that dynamically modifies the priority of a VRRP router, based on its current state. The objective of tracking is to have, whenever possible, the master bidding processes for various virtual routers in a LAN converge on the same switch. Tracking ensures that the selected switch is the one that offers optimal network performance. For tracking to have any effect on virtual router operation, preemption must be enabled.
Switch software can track the attributes listed in the following table: Table 23 VRRP tracking parameters
Parameter | Description |
|
|
Number of IP interfaces on the switch that are active (up)
/cfg/l3/vrrp/track/ifs
Helps elect the virtual routers with the most available routes as the master. (An IP interface is considered active when there is at least one active port on the same VLAN.) This parameter influences the VRRP router's priority in virtual interface routers.
Number of active ports on the same VLAN | Helps elect the virtual routers with the most available |
/cfg/l3/vrrp/track/ports | ports as the master. This parameter influences the VRRP |
| router's priority in virtual interface routers. |
|
|
Number of virtual routers in master mode on the switch | Useful for ensuring that traffic for any particular client/ |
/cfg/l3/vrrp/track/vrs | server pair is handled by the same switch, increasing |
| routing efficiency. This parameter influences the VRRP |
| router's priority in virtual interface routers. |
|
|
Each tracked parameter has a
See “Configuring the Switch for Tracking” for an example on how to configure the switch for tracking VRRP priority.
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